Equipment unit · VIN-decoded · NHTSA vPIC

2000 Peterbilt 379

1XP5D49X5YD537497 · Truck-Tractor · TRUCK
Carriers run under2
23 mo
Inspections9
all-time
OOS inspections7
of 9
First seenAug 24, 2023
TX
Last seenJul 1, 2025
TX
Inspected under 2 different carriers in 23 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XP5D49X5YD537497
Make
Peterbilt
Model
379
Model year
2000
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 19, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
5D49X

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
2000 or 2030

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
537497

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
PETERBILT

Prefix basis · 880 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 880 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2000

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
379

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 24, 2023 – Jul 1, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 1, 2025TXII · Walk-around14OOSJOSE GUADALUPE VITOLAS 43621921M55370/TX
Mar 13, 2025TXII · Walk-around3OOSJOSE GUADALUPE VITOLAS 43621921M55370/TX
Oct 17, 2024TXII · Walk-around8IRON HORSE TRANSPORT LLC 38193251M55370/TX
Aug 21, 2024TXII · Walk-around10IRON HORSE TRANSPORT LLC 38193251M55370/TX
Jun 17, 2024TXII · Walk-around18OOSIRON HORSE TRANSPORT LLC 38193251M27884/TX
Jun 13, 2024TXI · Full14OOSIRON HORSE TRANSPORT LLC 38193251M27884/TX
Jan 19, 2024TXII · Walk-around20OOSIRON HORSE TRANSPORT LLC 38193251M27884/TX
Nov 17, 2023TXII · Walk-around22OOSIRON HORSE TRANSPORT LLC 38193251M27884/TX
Aug 24, 2023TXI · Full28OOSIRON HORSE TRANSPORT LLC 38193251M27884/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JOSE GUADALUPE VITOLAS4362192Mar 13, 2025Jul 1, 20252TX
IRON HORSE TRANSPORT LLC3819325Aug 24, 2023Oct 17, 20247TX
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
1M55370TXJOSE GUADALUPE VITOLASMar 13, 2025Jul 1, 20252
1M55370TXIRON HORSE TRANSPORT LLCAug 21, 2024Oct 17, 20242
1M27884TXIRON HORSE TRANSPORT LLCAug 24, 2023Jun 17, 20245
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 19, 2026